[INFO] cloning repository https://github.com/functional-tim/rusty-turing-machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/functional-tim/rusty-turing-machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunctional-tim%2Frusty-turing-machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunctional-tim%2Frusty-turing-machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52e5f4b0ef0546a5f600a86052bc470600d14c76
[INFO] checking functional-tim/rusty-turing-machine against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunctional-tim%2Frusty-turing-machine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/functional-tim/rusty-turing-machine
[INFO] finished tweaking git repo https://github.com/functional-tim/rusty-turing-machine
[INFO] tweaked toml for git repo https://github.com/functional-tim/rusty-turing-machine written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/functional-tim/rusty-turing-machine on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/functional-tim/rusty-turing-machine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26a7adb2c7045cec617fd5a95f3a08d8ee3519d0d455ec7cf83bc6f41a4bdaf0
[INFO] running `Command { std: "docker" "start" "-a" "26a7adb2c7045cec617fd5a95f3a08d8ee3519d0d455ec7cf83bc6f41a4bdaf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26a7adb2c7045cec617fd5a95f3a08d8ee3519d0d455ec7cf83bc6f41a4bdaf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a7adb2c7045cec617fd5a95f3a08d8ee3519d0d455ec7cf83bc6f41a4bdaf0", kill_on_drop: false }`
[INFO] [stdout] 26a7adb2c7045cec617fd5a95f3a08d8ee3519d0d455ec7cf83bc6f41a4bdaf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68c7403fe4d173c216c32050bef874e6a5fbb4489970ba8b7cdc926e6103dce9
[INFO] running `Command { std: "docker" "start" "-a" "68c7403fe4d173c216c32050bef874e6a5fbb4489970ba8b7cdc926e6103dce9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling serde v1.0.185
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking winnow v0.6.11
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking toml_datetime v0.6.6
[INFO] [stderr]     Checking serde_spanned v0.6.6
[INFO] [stderr]     Checking toml_edit v0.22.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking toml v0.8.14
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking rusty-turing-machine v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | /     /// Output file
[INFO] [stdout] 47 | |     #[structopt(short = "o", long = "output")]
[INFO] [stdout] 48 | |     output: Option<PathBuf>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | /     /// Output file
[INFO] [stdout] 62 | |     #[structopt(short = "o", long = "output")]
[INFO] [stdout] 63 | |     output: Option<PathBuf>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | /     /// Output file
[INFO] [stdout] 47 | |     #[structopt(short = "o", long = "output")]
[INFO] [stdout] 48 | |     output: Option<PathBuf>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | /     /// Output file
[INFO] [stdout] 62 | |     #[structopt(short = "o", long = "output")]
[INFO] [stdout] 63 | |     output: Option<PathBuf>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-turing-machine` (bin "rusty-turing-machine") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rusty-turing-machine` (bin "rusty-turing-machine" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "68c7403fe4d173c216c32050bef874e6a5fbb4489970ba8b7cdc926e6103dce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c7403fe4d173c216c32050bef874e6a5fbb4489970ba8b7cdc926e6103dce9", kill_on_drop: false }`
[INFO] [stdout] 68c7403fe4d173c216c32050bef874e6a5fbb4489970ba8b7cdc926e6103dce9
